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Heat-resistance Fire-proof Cable Product Standard Enterprise standard. Fire-proof feature test refers to GB/T19216.21-2003 (equal to IEC60331). Usage It is used for signal checking and power transmission at high temp, rated A.C. voltage 0.6/1kV and below. Especially used for transmission line. Type and Designation ---- Type | Designation | NHFF | Cu core fire-proof & insulation layer heat-resistance fire-proof cable | NHFF22 | Cu core fire-proof & insulation layer steel tape armored heat-resistance fire-proof cable | NHFF32 | Cu core fire-proof & insulation layer steel wire armored heat-resistance fire-proof cable | NHFPF | Cu core fire-proof & insulation layer heat-resistance shield fire-proof cable | NHFPF22 | Cu core fire-proof & insulation layer steel tape armored heat-resistance shield fire-proof cable | NHFPF32 | Cu core fire-proof & insulation layer steel wire armored heat-resistance shield fire-proof cable | ---- Model explanation Technical performances ---- Item | Unit | Technical performances | D.C. Resistance of conductor (20) | /km | mm2 section | 0.5 | 0.75 | 1.0 | 1.5 | 2.5 | 4 | 6 | 10 | 16 | 25 | 35 | 50 | 70 | 95 | 120 | Resis- tance | 36 | 24.5 | 18.1 | 12.1 | 7.4 | 4.61 | 3.08 | 1.83 | 1.15 | 0.727 | 0.524 | 0.387 | 0.268 | 0.193 | 0.153 | Test voltage | kV/1min | 450/750V Test Voltage 2.5KV 600/1000V Test Voltage 3.5KV | Insulation resistance | Mkm | 100 | Fire-resistance feature | | Grade A (Flame temp 1000 90mintest 3A fuse wire not break) | ---- ---- Item | Code | Explanation | Series code | NH | Fire-proof cable | Insulating material | F | Fire-proof insulating material | Shielding material | / P | No shield to be omitted Tin-plated woven Cu wire | Sheath material | F | (F46) F46 | Armoring material | 22 32 | Steel tape armored Thin steel wire armored | Conductor type (fill in the brackets) | A B | Single strand conductor Twisted conductor | ---- E.G.1: Five core1.0mm2 type A conductor heat-resistance fire-proof cable is described as: NHFF 51.0(A) E.G.2: Five core 120mm2 Cu conductor steel wire armored Tin-plated woven Cu wire shield heat-resistance fire-proof cable is described as:NHFPF22 5120 Application characteristics 1. Operating temp: Long time use 200, short time use 1000 90 minutes. 2. Rated voltage U0/U: 450/750V, 600/1000V 3. Min. ambient temp: fixed installation -60, non-fix installation -20. 4. Min. bending radius: Non-armored cable10 times the cable outer dia. Armored cable 12 times the cable outer dia. Specifications cable ---- Type | Nominal cross section mm2 | 0.5 | 0.75 | 1.0 | 1.5 | 2.5 | 4 | 6 | 10 | 16 | 25 | 35 | 50 | 70 | 95 | 120 | Core number | NHFF | 2~61 | 2~10 | 1~5 | NHFF22 | | 4~61 | 2~10 | 2~5 | NHFF32 | | 4~61 | 4~10 | 3~5 | NHFPF | 2~61 | 2~10 | 1~5 | NHFPF22 | | 4~61 | 2~10 | 2~5 | NHFPF32 | | 4~61 | 4~10 | 3~5 | ---- Delivery lengths Non-armored cable is 500m armored cable is 200m, shortage length more than 30m may be delivered but not exceed 10% of the total length delivered special requirement to be discussed between the supplier and the buyer.
